Electronics Forum: corroded nickel (27)

Solderability issues due to excessive nickel

Electronics Forum | Thu Oct 30 21:55:13 EDT 2014 | davef

Why soldering issues? I'd guess the nickel is corroded. It is very difficult to solder to oxidized nickel. Your SAC305 would get kicked all the way down the conveyor by nickel oxide. A lack of Ni-Sn-IMC formation will confirm this dewetting . What's

Does this forum covers BGA's

Electronics Forum | Tue Feb 22 09:01:50 EST 2005 | davef

It could be that you're starting with hyper corroded nickel, before you even begin work. With electroless nickel, everybody looks at the nickel, but the cause turns out to be the immersion gold is too aggressive [during fabrication]. Immersion gold

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